Important

Account Linking Recommended

Event

Mini Special Event [Legacy of the Strongest] Now Available!

News

Official Social Media Accounts for KAIJU NO. 8 THE GAME

News

New Training: Plant-Type Kaiju α Added!

Gacha

[Limited] Gen Narumi Pickup Gacha Now Available!

Event

Main Story Ch. 12 Release & Celebration Event

Event

Training: Defense Force Manual—2x Rewards Campaign Now Available!

News

Defense Force Pass Now Available!

News

Monthly Items Reset

Update

[Updated] Data Update & Event Preview

News

[Updated] Version 1.9.1 Update Now Live

Event

Raid Battle: Kaiju No. 10 (Giant Form) HP Adjustment

Event

Mop-Up Operation Now Available!

Event

[Updated] Raid Battle: Kaiju No. 10 (Giant Form) Now Available!

Gacha

Soichiro Hoshina Pickup Gacha Now Available!

Event

Special Event [Whirlwind from the West] Now Available!

Event

Large Conquest: Invigorating Pursuit Now Available!

Gacha

Kikoru Shinomiya Pickup Gacha Rerun Now Available!

Gacha

[Limited] Akari Minase Pickup Gacha Now Available!

Event

Special Event [In a Gentle Drowse] Now Available!

Event

Fierce Battle Area (Limited): Point of Reversal Now Available!

Event

Fierce Battle Area (Permanent): High-Difficulty Stages Added!

News

New Trainings: Paraves-Type Kaiju α & Mole-Type/Feet Added!

News

New Upcoming Feature: Unlock Potential!

Update

Version 1.9.0 Update Now Live

Known Issue

[Updated] Regarding Currently Confirmed Issues

Known Issue

Regarding App Instability on iOS 26.4 and iPadOS 26.4

News

New Training: Wolf-Type Kaiju α Added!

News

New Trainings: Wyvern-Type Kaiju β/Kaiju No. 6 Added!

Event

THE GAME Missions Now Available!

Event

Expedition HARD Mode Added!

Event

New Training: Fungal-Type β Added!

News

Changes to Weekly Limit and Stamina for Identified Kaiju Neutralization

News

New Shop Arrival: Defense Force Support Special Pack!

Event

New Training: Caudata-Type α Added!

Event

New Training: Armored-Type α Added!

News

PC (Steam®) Version Now Available!

Important

Official Release & Pre-Registration Rewards

News

The KAIJU NO. 8 THE GAME Web Store

News

Release Celebration Items—Value Items Now On Sale!

Event

Mini Special Event [Legacy of the Strongest] Now Available!

News

Official Social Media Accounts for KAIJU NO. 8 THE GAME

News

New Training: Plant-Type Kaiju α Added!

Gacha

[Limited] Gen Narumi Pickup Gacha Now Available!

Event

Main Story Ch. 12 Release & Celebration Event

Event

Training: Defense Force Manual—2x Rewards Campaign Now Available!

News

Defense Force Pass Now Available!

News

Monthly Items Reset

News

[Updated] Version 1.9.1 Update Now Live

Event

Raid Battle: Kaiju No. 10 (Giant Form) HP Adjustment

Event

Mop-Up Operation Now Available!

Event

[Updated] Raid Battle: Kaiju No. 10 (Giant Form) Now Available!

Gacha

Soichiro Hoshina Pickup Gacha Now Available!

Event

Special Event [Whirlwind from the West] Now Available!

Event

Large Conquest: Invigorating Pursuit Now Available!

Gacha

Kikoru Shinomiya Pickup Gacha Rerun Now Available!

Gacha

[Limited] Akari Minase Pickup Gacha Now Available!

Event

Special Event [In a Gentle Drowse] Now Available!

Event

Fierce Battle Area (Limited): Point of Reversal Now Available!

Event

Fierce Battle Area (Permanent): High-Difficulty Stages Added!

News

New Trainings: Paraves-Type Kaiju α & Mole-Type/Feet Added!

News

New Upcoming Feature: Unlock Potential!

News

New Training: Wolf-Type Kaiju α Added!

News

New Trainings: Wyvern-Type Kaiju β/Kaiju No. 6 Added!

Event

THE GAME Missions Now Available!

Event

Expedition HARD Mode Added!

Event

New Training: Fungal-Type β Added!

News

Changes to Weekly Limit and Stamina for Identified Kaiju Neutralization

News

New Shop Arrival: Defense Force Support Special Pack!

Event

New Training: Caudata-Type α Added!

Event

New Training: Armored-Type α Added!

News

PC (Steam®) Version Now Available!

News

The KAIJU NO. 8 THE GAME Web Store

News

Release Celebration Items—Value Items Now On Sale!

Important

Account Linking Recommended

Update

[Updated] Data Update & Event Preview

Update

Version 1.9.0 Update Now Live

Known Issue

[Updated] Regarding Currently Confirmed Issues

Known Issue

Regarding App Instability on iOS 26.4 and iPadOS 26.4

Important

Official Release & Pre-Registration Rewards

2026-06-03T03:00:00Z

Mini Special Event [Legacy of the Strongest] Now Available!

Mini Special Event Now Available

Thank you for playing KAIJU NO. 8 THE GAME.

Mini Special Event [Legacy of the Strongest] is now available as of 2026-06-03T03:00:00Z.

In this Mini Special Event, you can play through the bite-sized story and quests to earn:

・A new Home background, also featured in the story

・Over 1,000 Dimensional Crystals

・Potential Shards II

...as well as other rewards and titles!

Please note that this event has a shorter duration than standard Special Events.

Take part in the event from Home > Events > Mini Special Event after clearing Main Story Chapter 0.

*Dimensional Crystals can be obtained from quest clear rewards, mission rewards, and from the event item Exchange Shop or the Event Gacha.

*The method for exchanging Interlude Notes varies from event to event.

Availability Period

2026-06-03T03:00:00Z - 2026-06-10T02:59:59Z

*Reward claim and event item exchange will be available until 2026-06-17T02:59:59Z.

Event Overview

The Mini Special Event offers the following content: Story, Quests, and Challenges. Clear quests to unlock the rest of the story.

■ Story

The story focuses on specific characters.

You must clear quests to progress through parts of the story.

Even if you are unable to reach the end of the story during the Mini Special Event period, please rest assured that it will be available to view as a Character Story after the event ends.

You can access Character Stories from Home > Story > Characters.

■ Quests

Deploy for quests by consuming Stamina.

By clearing a quest, you can proceed to the next one.

Quests have Combat Objectives. If you clear all Combat Objectives, you will be able to use the skip function on subsequent attempts.

Clear quests to obtain Interlude Notes, which can be exchanged for items in the Shop.

You can obtain a new Home background by exchanging Interlude Notes in the Shop.

Once obtained, you can use this Home background even after the event period.

*After the event period, the Home background will be available for exchange with Encounter Stones at Home > Shop > Encounter Stone.

If you already own the featured Home background, it will be converted into the same number of Encounter Stones required for the exchange.

■ Challenges

In Challenges, you can take on high-difficulty battles.

Stage effects will be active in Challenges. Be sure to make full use of them to secure yourself an advantage.

■ Missions

You can earn rewards by clearing various missions.

You can also earn the exchange item Interlude Notes from mission rewards, which can be exchanged for various items in the Shop.

In this event, new missions will unlock sequentially starting from 2026-06-03T19:00:00Z.

The mission unlock schedule is as follows:

  • DAY 2 Missions

2026-06-03T19:00:00Z

  • DAY 3 Missions

2026-06-04T19:00:00Z

*Interlude Notes will be available for use until 2026-06-17T02:59:59Z and will be recalled when expired.

Titles

In this Mini Special Event, you can obtain separate titles after meeting the following conditions: "Obtain a total of 15☆ in Mini Special Event Quests" and "Obtain a total of 3☆ in Mini Special Event Challenges."

Important

The date and time of the data update are subject to change. We appreciate your understanding.

Thank you for your continued support of KAIJU NO. 8 THE GAME.